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<div class="subTitle">org.apache.commons.math3.fitting</div>
<h2 title="Class GaussianCurveFitter" class="title">Class GaussianCurveFitter</h2>
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<li><a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html" title="class in org.apache.commons.math3.fitting">org.apache.commons.math3.fitting.AbstractCurveFitter</a></li>
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<li>org.apache.commons.math3.fitting.GaussianCurveFitter</li>
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<pre>public class <span class="strong">GaussianCurveFitter</span>
extends <a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html" title="class in org.apache.commons.math3.fitting">AbstractCurveFitter</a></pre>
<div class="block">Fits points to a <a href="../../../../../org/apache/commons/math3/analysis/function/Gaussian.Parametric.html" title="class in org.apache.commons.math3.analysis.function"><code>Gaussian</code></a>
 function.
 <br/>
 The <a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#withStartPoint(double[])"><code>initial guess values</code></a> must be passed
 in the following order:
 <ul>
  <li>Normalization</li>
  <li>Mean</li>
  <li>Sigma</li>
 </ul>
 The optimal values will be returned in the same order.

 <p>
 Usage example:
 <pre>
   WeightedObservedPoints obs = new WeightedObservedPoints();
   obs.add(4.0254623,  531026.0);
   obs.add(4.03128248, 984167.0);
   obs.add(4.03839603, 1887233.0);
   obs.add(4.04421621, 2687152.0);
   obs.add(4.05132976, 3461228.0);
   obs.add(4.05326982, 3580526.0);
   obs.add(4.05779662, 3439750.0);
   obs.add(4.0636168,  2877648.0);
   obs.add(4.06943698, 2175960.0);
   obs.add(4.07525716, 1447024.0);
   obs.add(4.08237071, 717104.0);
   obs.add(4.08366408, 620014.0);
   double[] parameters = GaussianCurveFitter.create().fit(obs.toList());
 </pre></div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>3.3</dd></dl>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.ParameterGuesser.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter.ParameterGuesser</a></strong></code>
<div class="block">Guesses the parameters <code>norm</code>, <code>mean</code>, and <code>sigma</code>
 of a <a href="../../../../../org/apache/commons/math3/analysis/function/Gaussian.Parametric.html" title="class in org.apache.commons.math3.analysis.function"><code>Gaussian.Parametric</code></a>
 based on the specified observed points.</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.commons.math3.fitting.<a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html" title="class in org.apache.commons.math3.fitting">AbstractCurveFitter</a></h3>
<code><a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.TheoreticalValuesFunction.html" title="class in org.apache.commons.math3.fitting">AbstractCurveFitter.TheoreticalValuesFunction</a></code></li>
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<td class="colFirst"><code>static <a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#create()">create</a></strong>()</code>
<div class="block">Creates a default curve fitter.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresProblem</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#getProblem(java.util.Collection)">getProblem</a></strong>(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../../org/apache/commons/math3/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.fitting">WeightedObservedPoint</a>&gt;&nbsp;observations)</code>
<div class="block">Creates a least squares problem corresponding to the appropriate curve.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#withMaxIterations(int)">withMaxIterations</a></strong>(int&nbsp;newMaxIter)</code>
<div class="block">Configure the maximum number of iterations.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#withStartPoint(double[])">withStartPoint</a></strong>(double[]&nbsp;newStart)</code>
<div class="block">Configure the start point (initial guess).</div>
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<h3>Methods inherited from class&nbsp;org.apache.commons.math3.fitting.<a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html" title="class in org.apache.commons.math3.fitting">AbstractCurveFitter</a></h3>
<code><a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html#fit(java.util.Collection)">fit</a>, <a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html#getOptimizer()">getOptimizer</a></code></li>
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<code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true#wait(long,%20int)" title="class or interface in java.lang">wait</a></code></li>
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<h4>create</h4>
<pre>public static&nbsp;<a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a>&nbsp;create()</pre>
<div class="block">Creates a default curve fitter.
 The initial guess for the parameters will be <a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.ParameterGuesser.html" title="class in org.apache.commons.math3.fitting"><code>GaussianCurveFitter.ParameterGuesser</code></a>
 computed automatically, and the maximum number of iterations of the
 optimization algorithm is set to <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Integer.html?is-external=true#MAX_VALUE" title="class or interface in java.lang"><code>Integer.MAX_VALUE</code></a>.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>a curve fitter.</dd><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#withStartPoint(double[])"><code>withStartPoint(double[])</code></a>, 
<a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html#withMaxIterations(int)"><code>withMaxIterations(int)</code></a></dd></dl>
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<h4>withStartPoint</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a>&nbsp;withStartPoint(double[]&nbsp;newStart)</pre>
<div class="block">Configure the start point (initial guess).</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>newStart</code> - new start point (initial guess)</dd>
<dt><span class="strong">Returns:</span></dt><dd>a new instance.</dd></dl>
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<h4>withMaxIterations</h4>
<pre>public&nbsp;<a href="../../../../../org/apache/commons/math3/fitting/GaussianCurveFitter.html" title="class in org.apache.commons.math3.fitting">GaussianCurveFitter</a>&nbsp;withMaxIterations(int&nbsp;newMaxIter)</pre>
<div class="block">Configure the maximum number of iterations.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>newMaxIter</code> - maximum number of iterations</dd>
<dt><span class="strong">Returns:</span></dt><dd>a new instance.</dd></dl>
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<h4>getProblem</h4>
<pre>protected&nbsp;<a href="../../../../../org/apache/commons/math3/fitting/leastsquares/LeastSquaresProblem.html" title="interface in org.apache.commons.math3.fitting.leastsquares">LeastSquaresProblem</a>&nbsp;getProblem(<a href="http://docs.oracle.com/javase/7/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<a href="../../../../../org/apache/commons/math3/fitting/WeightedObservedPoint.html" title="class in org.apache.commons.math3.fitting">WeightedObservedPoint</a>&gt;&nbsp;observations)</pre>
<div class="block">Creates a least squares problem corresponding to the appropriate curve.</div>
<dl>
<dt><strong>Specified by:</strong></dt>
<dd><code><a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html#getProblem(java.util.Collection)">getProblem</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/commons/math3/fitting/AbstractCurveFitter.html" title="class in org.apache.commons.math3.fitting">AbstractCurveFitter</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>observations</code> - Sample points.</dd>
<dt><span class="strong">Returns:</span></dt><dd>the least squares problem to use for fitting the curve to the
 given <code>points</code>.</dd></dl>
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